Elastic bedding-plate.



E. MiT'LLER & A. KA I SER.

ELASTIC BEDDING PLATE.

APPLICATION FILED OUT. 10, 1913.

1, 105,368. Patented July 28, 1914 I In 0672 aw: fljnc 5'65. 24 1 21556r THE NORRIS PETERS 00.. FHUTO-LITHLL, WASHINGTON, D. C

UNITED STATES PATENT oEErcE.

RNsT MtILLER, or B RLIN, AND ALFRED KAYsE 0E WILMERsDORE, NEAR BERLIN,

GERMANY, ASSIGNORS To DUEELWERKE 'GESELLSCI-IAFT MIT EEscnRANKTERI-IAFTUNG, or BERLIN, GERMANY, n CORPORATION or GERMANY.

ELAsTIc BEDDING-PLATE.

Specification of Letters Patent.

Patented July 28, 1914.

To all whom it may concern Be it known that we, ERNST MI'iLLER, railwayoflicer, residing at \Vartenburgstrasse 9, Berlin, Germany, and ALFREDKAisER, engineer, residing at Eisenzahnstrasse 8, Wilmersdorf, nearBerlin, Germany, both subjects of the German Emperor, have invented newand useful Improvements in Elastic BeddingPlates, of which the followingis a specification.

The present invention relates to a novel, elastic bedding plate for theconstruction of the permanent way on railway lines. Such plates are usedchiefly when the rails are laid on a solid bed, as is the case withmining railways, turntables, centesimal weighbridges and the like. Theplates are made either of wood or of leather, felt or other materialsused in building. Plates made of wood are entirely unserviceable.Therefore special machines have been designed, which treat the woodunder very high pressures. But also wooden plates which had been treatedin such a manner did not meet their purpose under heavy strains, so thatthe more expensive plates of felt and chromium leather or the like hadto be used.

According to the present invention the bedding plates are again made ofwood. It has been found that the destruction of the wooden beddingplates hitherto employed was the result of the fact that the wood fiberswhich are parallel to each other were not sufficiently closely andtightly united to each other so as to be able to resist the strains, inparticular the pressure and the shocks. The wooden plates thereforegradually became wider and thinner, whereby the cohesion of the fiberswas disrupted and the whole bedding plates were destroyed. This tendencyof the wooden plates to spread and disintegrate under pressuretransversely to the fibers can, according to the present invention, besuccessfully met by reinforcing the wooden plates with iron, steel andthe like metal. Such reinforcing may be obtained by means of straps,caps, wiring, webs or the like. The reinforcements must be only soarranged, that they prevent the expansion of the wood transversely tothe direction of the fibers.

In the accompanying drawing several constructional forms of the newplate are shown in plan and section.

Figures 1, 2 and 3 represent bedding plates provided with severalmodifications of the reinforcing means. Fig. 2 is an end view in sectionof Fig. 2, and Fig. 4 is a similar view of Fig. 3.

Fig. 1 shows a plate a, the short ends of which are wrapped with wire 5or metal straps 6 In the latter case the straps are preferably securedto the plate a by means of lugs cut into the straps and bent by means ofa sharp tool, which lugs 6 enter into the wood. In the former case it issuflicient to drive the ends of the wire into the wood or twist themtogether.

Fig. 2 shows a plate a, in which as evident from the section Fig. 2 aweb 0 has been driven, which has preferably an undulating shape. The web0 is split at both ends and the split ends are bentover the outside ofthe wood.

WVith the constructional form according to Fig. 3 the plate is fittedwith caps at both ends. These caps (Z may be stamped of any suitablesheet metal. They are secured to the wood by means of small indents 0ZFig. 4: shows a special constructional form of the caps. In this casethe cap is made of band metal, and has a web d which is driven into thecross grain of the plate. The reinforcements may also be combined witheach other in various ways. For instance, the bands and wires accordingto Fig. 1 may be employed in combination with the web's according toFigs. '2 and. 2 and the latter .in combination with the caps d (Fig. 3).

The straps or wires 5, b may also be provided at one or at several partsof the middle of the plates.

We claim:

1. In combination with an elastic bedding plate, of suitable material,reinforcing means comprising metallic caps inclosing the ends of saidplate, adapted to prevent spreading thereof.

2. In combination with an elastic bedding plate of suitable material,reinforcing means comprising metallic caps inclosing the ends of saidplate, adapted to prevent spreading thereof, lugs formed integrally witheach of said caps for engagement with said plate, the ends of said capsbeing recessed internally to form V-shaped members for engaging saidplate.

3. In combination with an elastic bedding plate, reinforcing stripsdriven edgewise into the ends of said bedding plate, each of said stripshaving bifurcated projecting ends bent in opposite directions to embracethe sides of said bedding plate.

4. In combination with an elastic bedding plate, corrugated metallicreinforcing strips driven edgewise into the ends of said bedding plate,each of said strips being provided with bifurcated projecting ends butat right angles in opposite directions to embrace the sides of saidbedding plate.

5. In combination with an elastic bedding plate, reinforcing stripsdriven into the ends thereof, each provided with bifurcated projectingends bent in opposite directions to embrace the side of said beddingplate and clenched over thebase and top thereof re 7 plate, means forreinforcing the same comprising each a fiat strip of metal corrugatedtransversely and driven edgewise into the ends of said bedding plate,bifurcated parti tions on said strips projecting beyond the sides ofsaid bedding plate and bent up in opposite directions to embrace saidsides and having the terminals thereof turned over against the baseandtop of thebedding plate respectively.

In testimony, that we claim the foregoing as our invention, we havesigned our names in presence of two witnesses, this 25th day ofSeptember 1913.

' ERNST ALFRED KAYSER. \Vitnesses:

WOLDEMAR HAUPT, HENRY HASPER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

